Future refreshCredentials()

in lib/src/client.dart [150:179]

• 25 lines of code
• 4 McCabe index (conditional complexity)

  Future<Client> refreshCredentials([List<String>? newScopes]) async {
    if (!credentials.canRefresh) {
      var prefix = 'OAuth credentials';
      if (credentials.isExpired) prefix = '$prefix have expired and';
      throw StateError("$prefix can't be refreshed.");
    }

    // To make sure that only one refresh happens when credentials are expired
    // we track it using the [_refreshingFuture]. And also make sure that the
    // _onCredentialsRefreshed callback is only called once.
    if (_refreshingFuture == null) {
      try {
        _refreshingFuture = credentials.refresh(
          identifier: identifier,
          secret: secret,
          newScopes: newScopes,
          basicAuth: _basicAuth,
          httpClient: _httpClient,
        );
        _credentials = await _refreshingFuture!;
        _onCredentialsRefreshed?.call(_credentials);
      } finally {
        _refreshingFuture = null;
      }
    } else {
      await _refreshingFuture;
    }

    return this;
  }